package demo1;

import java.util.List;

/**
 * @Author liangzai
 * @Description:
 */
public class ListNode {
    public int val;
    public ListNode next;
    public ListNode left;
    public ListNode right;

    public ListNode(int val, ListNode left, ListNode right) {
        this.val = val;
        this.left = left;
        this.right = right;
    }
}
